Natural Disasters

Gaze Down Into the eye of Hurricane Ian, Seen From Orbit

NASA and NOAA satellites — as well as astronauts on the ISS — captured some stunning imagery of Hurricane Ian, as seen from orbit. Our lead image shows an eerie view of the hurricane’s eye on September 28. The Landsat 8 satellite passed directly over Ian’s eye as the storm approached southwest Florida.

The natural-color image above was acquired by the satellite’s Operational Land Imager camera at 11:57 a.m. local time (15:57 Universal Time), three hours before the storm made landfall in Caya Costa, Florida. At the time the image was taken, the eye was 42 kilometers (26 miles) in diameter.

Ian was just shy of a category 5 hurricane when it made landfall, and the intensity of the winds pushed a catastrophic storm surge into coastal communities, including Cape Coral and Fort Myers. Reports from the area show that winds and floods have destroyed or damaged large numbers of homes and knocked out power to millions. Tragically, as CNN reported, as of today (Oct. 3) the number of people killed in Florida by Hurricane Ian rose to at least 100.  Rescue crews are still searching for survivors.

A crew member onboard the International Space Station took this photograph of Hurricane Ian on September 26 while orbiting more than 400 kilometers (250 miles) above Earth’s surface. At the time, the space station was located over the Caribbean Sea east of Belize, and Hurricane Ian was just south of Cuba. Over the course of the day, it grew from a tropical storm to a category-2 hurricane. Credit: NASA.

NASA says the eye of a hurricane is a circular zone of fair weather at the storm’s center. It is surrounded by a towering ring of extremely powerful thunderstorms called an eyewall, the part of the hurricane with the strongest winds. The swirling clouds along the edges of the eyewall are mesovortices—small-scale rotational features found in hurricanes with unusually strong winds.

According to the National Hurricane Center, when Ian’s eyewall crashed into Florida, its maximum sustained winds were 240 km/hr (150 mph)  hour. Winds at that speed can tear the roofs off homes and snap power lines.

The Visible Infrared Imaging Radiometer Suite (VIIRS) on the NOAA–NASA Suomi NPP satellite captured views of the metropolitan areas of Fort Myers and North Naples, Florida showing city lights seen from orbit before and after Hurricane Ian passed through the area. Data from September 30 were compared to a pre-storm composite (August) and overlaid on landcover data collected by Landsat 8 and 9. Credit: NASA Earth Observatory.

“Those breathtaking low-level cloud swirls in Ian’s eye might provide clues into some important processes that affect a hurricane’s intensity,” said Justin Whitaker, a researcher with NASA’s Short-term Prediction Research and Transition Center (SPoRT). The SPoRT team, based at Marshall Space Flight Center, focuses on improving weather forecasts using NASA data. “At SPoRT, we’re studying how these inner-core asymmetries can affect a hurricane’s structure, its potential to intensify, and whether lightning will occur within the storm’s eyewall.”

The animation above shows the evolution of Ian’s wind field between September 25–29, 2022. The strongest winds appear bright yellow; more moderate winds are shades of orange and bright purple. Credit: NASA Earth Observatory.

As Ian barreled past Cuba and passed into the Gulf of Mexico on September 27, the hurricane’s eye was roughly 20 km (12 miles) wide.  As it strengthened over the ocean, the eye expanded to a width of 55 km (34 miles), then reducing in size before landfall in Florida.

The simulated natural-color image above was acquired at 9:10 a.m. local time (13:10 Universal Time) on September 28, 2022, by the Advanced Baseline Imager (ABI) on the Geostationary Operational Environmental Satellite 16 (GOES-16). Credit: NOAA and NASA.

On September 28, 2022, by the Advanced Baseline Imager (ABI) on the Geostationary Operational Environmental Satellite 16 (GOES-16) took this image. At the time this image was taken, the storm had sustained winds of 155 miles (250 kilometers) per hour—making it a major category-4 hurricane and putting it near the threshold of a category-5 storm. Cloud bands already covered much of Florida.

GOES satellites are operated by the National Oceanic and Atmospheric Administration (NOAA); NASA helps develop and launch the GOES series of satellites.

As of today, Ian is considered a post-tropical storm, but it still is making waves along the Atlantic coast. You can see real-time images of the storm at the GOES Image Viewer website.

Sources: NASA Earth Observatory

Nancy Atkinson

Nancy has been with Universe Today since 2004, and has published over 6,000 articles on space exploration, astronomy, science and technology. She is the author of two books: "Eight Years to the Moon: the History of the Apollo Missions," (2019) which shares the stories of 60 engineers and scientists who worked behind the scenes to make landing on the Moon possible; and "Incredible Stories from Space: A Behind-the-Scenes Look at the Missions Changing Our View of the Cosmos" (2016) tells the stories of those who work on NASA's robotic missions to explore the Solar System and beyond. Follow Nancy on Twitter at https://twitter.com/Nancy_A and and Instagram at and https://www.instagram.com/nancyatkinson_ut/

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